The 2017-2018 flu season has shown to be particularly nasty this year — in part, they believe, because of a less effective vaccine. Each month, flu cases have multiplied and the CDC has already warned this year's flu will be worst than the last. To date, 36 states are showing widespread influenza levels and many believe this season could easily reach epidemic levels.

Flu has sent more than three times the number of people to the hospital in Colorado than usual

The University of Chicago hospital is even taking steps to restrict visitors. In a recent article, the hospital "will not allow children under age 12 and those with a fever, cough, sore throat, runny nose or nasal congestion will not be allowed to visit patients.